An object that provides index data for the submesh.
- iOS 9.0+
- macOS 10.11+
- tvOS 9.0+
- Model I/O
An index buffer contains indices, each of which identifies a vertex in the vertex buffers of the
MDLMesh object containing the mesh. Together with the submesh’s
geometry property, the sequence of indices determines how to interpret the mesh’s vertex data to construct the geometric form for a portion of the mesh.